If TikTok fitness advice is to be believed, you should be interval walking like the Japanese, hanging from a pull-up bar every day, and committing to a 75-day challenge with no rest days.<\/p>\n
Some of these trends are grounded in scientific research. Others are built on shaky claims or misunderstandings of how the body actually adapts to\u00a0exercise<\/a>.<\/p>\n Social media has made fitness advice more accessible than ever. But\u00a0an academic review has raised concerns<\/a>\u00a0about the accuracy and quality of online fitness content, much of which is produced by creators without relevant qualifications.<\/p>\n So which viral workouts actually hold up when you look at the evidence? Here\u2019s what the science says about four of the most widely shared trends.<\/p>\n Japanese walking<\/p>\n According to an\u00a0analysis of Google search data<\/a>, \u201cJapanese walking\u201d saw a 2,968 percent increase in search interest over the past year. The method is simple: Alternate three minutes of brisk walking with three minutes at a gentle pace for around 30 minutes.<\/p>\n What makes this trend unusual is that it\u2019s actually grounded in peer-reviewed research. Developed by researchers at Shinshu University in Japan,\u00a0a randomized controlled trial<\/a>\u00a0studied 246 adults (average age 63). The interval walking group showed significantly greater improvements in thigh muscle strength, aerobic capacity, and blood pressure than a steady-pace group. A\u00a02024 review<\/a>\u00a0confirmed these benefits hold up across larger populations.<\/p>\n There are caveats, though. In the original study,\u00a0roughly 22 percent of participants dropped out<\/a>\u00a0of the interval program \u2014 more than in the steady-pace group. And no study has yet linked Japanese walking directly to living longer. We already know that\u00a0hitting a modest daily step target<\/a>\u00a0reduces the risk of death and disease. Japanese walking appears to be a useful upgrade to a regular walking habit \u2014 but it\u2019s not the only way to get moving.<\/p>\n 75 Hard<\/p>\n The 75 Hard challenge is one of the most widely shared fitness trends on TikTok. The rules: two 45-minute workouts daily (one outdoors), a strict diet, a gallon of water, ten pages of reading, and a progress photo \u2014 for 75 consecutive days with no rest days.<\/p>\n The no-rest-days rule is the most problematic element. Physiological adaptation to exercise, the process by which your body becomes fitter, doesn\u2019t happen during training. It happens during recovery. Exercise creates a controlled stress; given sufficient rest, the body rebuilds and adapts.<\/p>\n Without it, you accumulate fatigue rather than fitness. A\u00a0joint consensus statement<\/a>\u00a0from the European College of Sport Science and American College of Sports Medicine outlines how sustained overload without adequate recovery can progress to\u00a0overtraining syndrome<\/a>: chronic fatigue, declining performance, and increased susceptibility to illness and injury.<\/p>\n The 90 minutes of daily exercise also far exceeds the World Health Organization\u2019s\u00a0guideline of 150 to 300 minutes per week<\/a>. For someone currently inactive, jumping to 630 minutes a week is a recipe for injury, not transformation.<\/p>\n Dead hangs<\/p>\n Dead hangs (hanging from a pull-up bar for as long as possible) are a fixture of fitness social media. Proponents claim the exercise decompresses the spine, corrects posture, and transforms shoulder health. Some of these claims hold up better than others.<\/p>\n The strongest case for dead hangs is grip strength. This might sound unglamorous, but it\u2019s clinically significant. A\u00a02019 narrative review<\/a>\u00a0described grip strength as an \u201cindispensable biomarker\u201d for health, with multiple meta-analyses linking weak grip to higher mortality risk. The\u00a0PURE study<\/a>, which tracked nearly 140,000 adults across 17 countries, found grip strength was a stronger predictor of cardiovascular death than systolic blood pressure.<\/p>\n The \u201cspinal decompression\u201d claims, however, are less convincing. While gravity-based traction can temporarily increase disc height<\/a>, the spine returns to its normal state once you\u2019re back under gravitational load. No study has shown that brief bouts of hanging produce lasting spinal changes. Dead hangs are a useful exercise, just not for the reasons most often claimed.<\/p>\n Pilates<\/p>\n Pilates was the\u00a0most-booked workout globally<\/a>\u00a0on ClassPass for the third consecutive year, with reservations up 66 percent from 2024. Research supports its benefits:\u00a0A systematic review<\/a>\u00a0found strong evidence that Pilates improves flexibility and dynamic balance in healthy people, with moderate evidence for muscular endurance.<\/p>\n Where the evidence falls apart is the claim that Pilates builds \u201clong, lean muscles,\u201d as opposed to \u201cbulky\u201d ones from lifting weights<\/a>. This is a myth. Muscle length is determined by anatomy, where each muscle\u2019s tendons attach to bone. No form of exercise can change that.<\/p>\n What Pilates can do is improve the range of motion around a joint and build endurance under lower loads. But the \u201clean versus bulky\u201d framing has no basis in physiology, and it risks discouraging people from progressive strength training, which carries\u00a0substantial benefits<\/a>\u00a0for bone density<\/a>, metabolic health, and cardiovascular risk<\/a>.<\/p>\n Social media has gotten more people interested in exercise \u2014 and that\u2019s genuinely valuable. But viral appeal is not the same as evidence. The principles that actually keep people healthy haven\u2019t changed: Build up gradually, allow time to recovery, and be skeptical of anything promising dramatic results in an unrealistic time frame.<\/p>\n Jack McNamara<\/a> is a senior lecturer in clinical exercise physiology at the University of East London.<\/p>\n This article is republished from\u00a0The Conversation<\/a>\u00a0under a Creative Commons license. Read the\u00a0original article.<\/a><\/p>\n The post From Japanese Walking to 75 Hard: What the Science Really Says About Viral Fitness Trends<\/a> appeared first on Katie Couric Media<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"If TikTok fitness advice is to be believed, you should be interval walking like the Japanese, hanging from…\n","protected":false},"author":2,"featured_media":20610,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[16296,16298,16297,8,17,1240,16295,16299],"class_list":{"0":"post-20609","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-japan","8":"tag-brisk-walking","9":"tag-fitness-advice","10":"tag-fitness-trends","11":"tag-japan","12":"tag-japanese","13":"tag-social-media","14":"tag-viral-fitness-trends","15":"tag-walking-group"},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/japan\/wp-json\/wp\/v2\/posts\/20609","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/japan\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/japan\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/japan\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/japan\/wp-json\/wp\/v2\/comments?post=20609"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/japan\/wp-json\/wp\/v2\/posts\/20609\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/japan\/wp-json\/wp\/v2\/media\/20610"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/japan\/wp-json\/wp\/v2\/media?parent=20609"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/japan\/wp-json\/wp\/v2\/categories?post=20609"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/japan\/wp-json\/wp\/v2\/tags?post=20609"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}